Siemens Simatic M7-400 Reference Manual page 239

5.3.2 Analog Value Representation for Analog Output Channels
Introduction
The tables in this chapter contain the analog value representation for output
channels of the analog output modules. The values in the tables apply to all
modules with the corresponding output ranges.
Notes on How to Read the Tables
Tables 5-31 to 5-33 contain the binary representation of the output values.
Since the binary representation of the output values is always the same, starting at
5-34 these tables only contain the output ranges and the units.
Binary Representation of the Output Ranges
The output ranges shown in Tables 5-31 to 5-33 are defined in two's complement
representation:
Table 5-31 Bipolar Output Ranges
Units Output
Value in Val e i
1
2
%
5
w32512 0%
0
32511 117.589 0
27649 w100.004
0
27648 100.000 0
1 0.003617 0
0 0.000 0
–1 – 1
0.003617
–27648 –100.000 1
–27649 v100.004
1
–32512 –117.593 1
v32513 0%
1
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Data Word
1 1 1 11 1 9
2 2 2 2 2 2
4 3 2 0
1 1 1 1 1 1
1 1 1 1 1 1
1 1 0 1 1 0
1 1 0 1 1 0
0 0 0 0 0 0
0 0 0 0 0 0
1 1 1 1 1 1
0 0 1 0 1 0
0 0 1 0 0 1
0 0 0 0 0 0
0 0 0 0 0 0
8 7 6 5 4 3 2
2 2 2 2 2 2 2
1 x x x x x x
0 1 1 1 1 1 1
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
1 1 1 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
1 0 0 0 0 0 0
0 x x x x x x
Analog Modules
Range
1 0
2 2
x x Overflow
1 1 Overrange
0 1
0 0
0 1
Rated
0 0
range
1 1
0 0
1 1 Under
range
0 0
x x Underflow
5-23